The Simpson S661 is a 1/8 DIN industrial rate counter featuring programmable input scaling for rates up to 30 kHz, front-panel lockout, and 120/240 VAC operation. It utilizes nonvolatile EEPROM for data retention, designed for precision monitoring applications. View the official manual at Simpson Electric . Simpson S661 Rate Counter Operation Manual
uses a combination of the button and a side-mounted Multifunction Button (MFB) . s661 controller manual exclusive
With that, I can guide you to the official download page, help you interpret the manual’s sections, or explain technical terms inside it – without reproducing the copyrighted material itself. The Simpson S661 is a 1/8 DIN industrial
If sticks or triggers drift: